
[Shortening and alteration of naphthyridine and carboxylic acid, elements of one of its chemical names.]
| naftidrofuryl oxalate, nafarelin, nadolol | |
| naloxone hydrochloride, naltrexone hydrochloride, nandrolone decanoate |

| nactin, nRNA, nM | |
| naloxone, naltrexone, nano+ |
A naphthylidine derivative that inhibits DNA synthesis. Used for the treatment of urinary tract infections due to susceptible gram-negative bacteria. Side-effects in dogs include vomiting, diarrhea and seizures.
An antibacterial prescribed in the treatment of urinary tract infections.
| Systematic (IUPAC) name | |
|---|---|
| 1-ethyl-7-methyl-4-oxo-[1,8]naphthyridine-3-carboxylic acid | |
| Clinical data | |
| AHFS/Drugs.com | Consumer Drug Information |
| Pregnancy cat. | B U.S. |
| Legal status | ? |
| Routes | Oral |
| Pharmacokinetic data | |
| Protein binding | 90% |
| Metabolism | Partially Hepatic |
| Half-life | 6-7 hours, significantly longer in renal impairment |
| Identifiers | |
| CAS number | 389-08-2 |
| ATC code | J01MB02 |
| PubChem | CID 4421 |
| DrugBank | DB00779 |
| ChemSpider | 4268 |
| UNII | 3B91HWA56M |
| KEGG | D00183 |
| ChEBI | CHEBI:100147 |
| ChEMBL | CHEMBL5 |
| Chemical data | |
| Formula | C12H12N2O3 |
| Mol. mass | 232.235 g/mol |
| SMILES | eMolecules & PubChem |
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Nalidixic acid (tradenames Nevigramon, Neggram, Wintomylon and WIN 18,320) is the first of the synthetic quinolone antibiotics. In the technical sense, it is a naphthyridone, not a quinolone: its ring structure is a 1,8-naphthyridines nucleus that contains two nitrogen atoms, unlike quinoline, which has a single nitrogen atom.[1]
Synthetic quinolone antibiotics were discovered by George Lesher and coworkers as a byproduct of chloroquine manufacture in the 1960s.[1]
Nalidixic acid is effective against both gram-positive and gram-negative bacteria. In lower concentrations, it acts in a bacteriostatic manner; that is, it inhibits growth and reproduction. In higher concentrations, it is bactericidal, meaning that it kills bacteria instead of merely inhibiting their growth.
It is especially used in treating urinary tract infections, caused, for example, by Escherichia coli, Proteus, Shigella, Enterobacter, and Klebsiella.. It is also a tool in studies as a regulation of bacterial division. It selectively and reversibly blocks DNA replication in susceptible bacteria. Nalidixic acid and related antibiotics inhibit a subunit of DNA gyrase and induce formation of relaxation complex analogue. It also inhibits the nicking dosing activity on the subunit of DNA gyrase that releases the positive binding stress on the supercoiled DNA. It is the only FDA approved quinolone for treating UTI infections in children (3).
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Contents
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Convulsions and hyperglycaemia[2]
Aeromonas hydrophila, Clostridium and Haemophilus influenza species are generally susceptible to Nalidixic acid, while other species such as Bifidobacteria, Lactobacillus, Pseudomonas and Staphylococcus are resistant to Nalidixic acid. [3]
3 Barkley, Nghiem, (Sept. 2011) "AAP reviews
use of systemic and topical Quinolones" Medscape educational briefs
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